Related Clues:

• It's well within what the choristers do to come to prominence
• Trading about a quarter, but it's on the increase
• Refusal of Chirac's caused a knotty point
• Signed agreement with European part of network
• Never offer drunk eggnog starters, bud!
• Knot - knob
• Knob - swelling
• Point of convergence
• Lump at junction
• Swelling - point of junction
• Tumour
• Botanical knot
• Connection point
• Networking spot
• Either end of an edge, in graph theory